v2.x CVE fix #552

Job	Run time
rubocop	14s
Unit test (ubuntu-20.04, 3.1)	1m 45s
Unit test (ubuntu-20.04, 3)	1m 49s
Unit test (ubuntu-20.04, 3.2)	1m 50s
Unit test (ubuntu-20.04, 3.3)	1m 50s
Unit test (ubuntu-20.04, truffleruby)	3m 52s
Unit test (ubuntu-20.04, 3.4)	1m 51s
Unit test (macos-latest, 3.1)	1m 37s
Unit test (macos-latest, 3)	1m 56s
Unit test (macos-latest, 3.3)	2m 3s
Unit test (macos-latest, 3.4)	1m 36s
Unit test (macos-latest, jruby-9.4)	2m 30s
Unit test (ubuntu-20.04, jruby-9.4)	2m 43s
Unit test (windows-latest, 3.3)	3m 50s
Unit test (macos-latest, 3.2)	2m 4s
Unit test (windows-latest, 3.4)	4m 34s
Unit test (windows-latest, 3)	4m 33s
Unit test (windows-latest, 3.1)	3m 32s
Unit test (macos-latest, truffleruby)	2m 57s
Unit test (windows-latest, 3.2)	4m 51s
finish	3s
	52m 0s

Provide feedback